(CS) Ozone levels in Luxembourg are expected to stay below the EU limit of 180 μg/m³ despite the warm weather.

Build-up of ozone in the atmosphere can negatively affect health, for example causing headaches or respiratory problems. During warm weather, Luxembourg authorities keep a close eye on ozone levels in the country, for example imposing lower speed limits on the country's motorways to keep ozone in check.

On Sunday evening, a Vianden weather station measured a slight breach of the recommended EU limit, at 182 μg/m³. On Monday, however, ozone limits were largely between 150 and 170 μg/m³.

They were expected to fall further on Tuesday, as parts of the country saw some rain overnight and temperatures dropped slightly. With the weather expected to cool off further over the coming days, ozone should remain well below the EU limit, at around 90 to 110 μg/m³.